Tasty-Party-1660's journey

I just started my first job at a liquor store, and honestly, I'm feeling pretty miserable. I'm 19, almost 20, and after finishing a three-day unpaid training, I'm about to dive into my first 9-hour shift tomorrow, followed by two more 8-hour shifts. The schedule is packed with 5-6 hour shifts for the rest of the week, and I only have Friday off. I got this job through a family friend, and I was initially grateful, but now I'm feeling overwhelmed and depressed. Before this, I had a few short gigs in fast food and retail, but nothing lasted long. Now, I feel suffocated by the responsibilities that come with this job. I used to live a carefree life, but now I’m struggling with anxiety and unhappiness. I have hobbies I love, and the thought of not having time for them is really dragging me down. I can't ask for shorter hours since I haven't even started yet, and I fear that if I do, I might lose the job. My parents are supportive and optimistic that I'll feel better soon, but it feels like an eternity to me. I have one co-worker who's nice, but I don't know if we’ll become friends. The pressure to not disappoint my parents and the family friend who helped me get this job is weighing heavily on me. I'm considering asking my employer for part-time hours once I start school in winter, but I plan to wait a couple of months before bringing that up. I really want to gain experience, but I can't shake off this feeling of depression. I've talked to friends who work hard, and while I want to contribute too, I just feel stuck. Any advice on how to cope with this would be greatly appreciated.